As Le Corbusier said:
“The window is one of the most important destinations in the house. Progress brings a blast of liberation. Reinforced cement revolutionizes the history of window construction. Windows can run from one side of the facade to the other”.
In modern and contemporary architecture, the introduction of reinforced cement and steel as building systems has allowed large openings. Thanks to the remarkable thinness of the metal skeletons and to the progress of the glass industry, it is possible to extend the windows until they are transformed into window-walls, under the ever-increasing need for maximum natural lighting.